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6

Set 1: Linear Functions (Beginner)

Explanation

Answer: D

PROBLEM

If f(x) = 2x - 1, find f(5).

If f(x) = 2x - 1, find f(5).

A.

11

B.

7

C.

10

D.

9

✓ Correct

Detailed Explanation

Choice D is the best answer. f(5) = 2(5) - 1 = 9

Why others are wrong:
A: 11 is incorrect because it does not satisfy the equation.
B: 7 is incorrect because it does not satisfy the equation.
C: 10 is incorrect because it does not satisfy the equation.
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